Nginx安装

Nginx安装

进入/usr/local/src目录下，下载一个Nginx的稳定版。

[root@shuai-01 ~]# cd /usr/local/src
[root@shuai-01 src]# wget http://nginx.org/download/nginx-1.12.2.tar.gz

解压压缩包：

[root@shuai-01 src]# tar zxvf nginx-1.12.2.tar.gz

编译：
进入Nginx目录下
编译根据自己的要求来编译，选择一些模块。
我这里只指定文件路径：

[root@shuai-01 nginx-1.12.2]# ./configure --prefix=/usr/local/nginx

接着make：

[root@shuai-01 nginx-1.12.2]# make

make install：

[root@shuai-01 nginx-1.12.2]# make install

[root@shuai-01 nginx-1.12.2]# ls /usr/local/nginx/
conf  html  logs  sbin

conf : 配置文件目录
html : 网页样例
logs： 日志
sbin: 进程，核心文件

给配置文件做一个启动脚本（/etc/init.d/nginx）：

vim /etc/init.d/nginx

将这段写入脚本：

#!/bin/bash
# chkconfig: - 30 21
# description: http service.
# Source Function Library
. /etc/init.d/functions
# Nginx Settings
NGINX_SBIN="/usr/local/nginx/sbin/nginx"
NGINX_CONF="/usr/local/nginx/conf/nginx.conf"
NGINX_PID="/usr/local/nginx/logs/nginx.pid"
RETVAL=0
prog="Nginx"
start() 
{
    echo -n $"Starting $prog: "
    mkdir -p /dev/shm/nginx_temp
    daemon $NGINX_SBIN -c $NGINX_CONF
    RETVAL=$?
    echo
    return $RETVAL
}
stop() 
{
    echo -n $"Stopping $prog: "
    killproc -p $NGINX_PID $NGINX_SBIN -TERM
    rm -rf /dev/shm/nginx_temp
    RETVAL=$?
    echo
    return $RETVAL
}
reload()
{
    echo -n $"Reloading $prog: "
    killproc -p $NGINX_PID $NGINX_SBIN -HUP
    RETVAL=$?
    echo
    return $RETVAL
}
restart()
{
    stop
    start
}
configtest()
{
    $NGINX_SBIN -c $NGINX_CONF -t
    return 0
}
case "$1" in
  start)
        start
        ;;
  stop)
        stop
        ;;
  reload)
        reload
        ;;
  restart)
        restart
        ;;
  configtest)
        configtest
        ;;
  *)
        echo $"Usage: $0 {start|stop|reload|restart|configtest}"
        RETVAL=1
esac
exit $RETVAL

更改配置文件权限：

[root@shuai-01 nginx-1.12.2]# chmod 755 /etc/init.d/nginx 

添加为系统服务，并设置为开机自启动：

[root@shuai-01 nginx-1.12.2]# chkconfig --add nginx
[root@shuai-01 nginx-1.12.2]# chkconfig nginx on

配置Nginx的配置文件：
Nginx的conf目录下有nginx.conf这个文件了。

[root@shuai-01 nginx-1.12.2]# cd /usr/local/nginx/conf
[root@shuai-01 conf]# 
[root@shuai-01 conf]# ls
fastcgi.conf            koi-win             scgi_params
fastcgi.conf.default    mime.types          scgi_params.default
fastcgi_params          mime.types.default  uwsgi_params
fastcgi_params.default  nginx.conf          uwsgi_params.default
koi-utf                 nginx.conf.default  win-utf

不用，用自己创建的配置文件。
先将nginx.conf改名

[root@shuai-01 conf]# mv nginx.conf nginx.conf.1

自己创建

[root@shuai-01 conf]# vim nginx.conf

写入：

user nobody nobody;
worker_processes 2;
error_log /usr/local/nginx/logs/nginx_error.log crit;
pid /usr/local/nginx/logs/nginx.pid;
worker_rlimit_nofile 51200;
events
{
    use epoll;
    worker_connections 6000;
}
http
{
    include mime.types;
    default_type application/octet-stream;
    server_names_hash_bucket_size 3526;
    server_names_hash_max_size 4096;
    log_format combined_realip '$remote_addr $http_x_forwarded_for [$time_local]'
    ' $host "$request_uri" $status'
    ' "$http_referer" "$http_user_agent"';
    sendfile on;
    tcp_nopush on;
    keepalive_timeout 30;
    client_header_timeout 3m;
    client_body_timeout 3m;
    send_timeout 3m;
    connection_pool_size 256;
    client_header_buffer_size 1k;
    large_client_header_buffers 8 4k;
    request_pool_size 4k;
    output_buffers 4 32k;
    postpone_output 1460;
    client_max_body_size 10m;
    client_body_buffer_size 256k;
    client_body_temp_path /usr/local/nginx/client_body_temp;
    proxy_temp_path /usr/local/nginx/proxy_temp;
    fastcgi_temp_path /usr/local/nginx/fastcgi_temp;
    fastcgi_intercept_errors on;
    tcp_nodelay on;
    gzip on;
    gzip_min_length 1k;
    gzip_buffers 4 8k;
    gzip_comp_level 5;
    gzip_http_version 1.1;
    gzip_types text/plain application/x-javascript text/css text/htm 
    application/xml;
    server
    {
        listen 80;
        server_name localhost;
        index index.html index.htm index.php;
        root /usr/local/nginx/html;
        location ~ \.php$ 
        {
            include fastcgi_params;
            fastcgi_pass unix:/tmp/php-fcgi.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME /usr/local/nginx/html$fastcgi_script_name;
        }    
    }
}

编辑配置文件后，检查语法：

[root@shuai-01 conf]# /usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

启动nginx

[root@shuai-01 conf]# /etc/init.d/nginx start
Starting nginx (via systemctl):                            [  确定  ]

user 用来定义启动nginx服务的是那个用户。
worker_processes 2; //子进程有两个

error_log /usr/local/nginx/logs/nginx_error.log crit; //错误日志

worker_rlimit_nofile 51200;//nginx最多打开多少个文件
events
{
use epoll;//使用epoll模式
worker_connections 6000;//最多的连接数
}

server 和Apache配置文件中的virtual hosts 一样，对应虚拟主机。

    server
    {
        listen 80; //监听80端口
        server_name localhost; //域名
        index index.html index.htm index.php;//默认页
        root /usr/local/nginx/html; //网站根目录所在
        location ~ \.php$ 
        {
            include fastcgi_params;
            fastcgi_pass unix:/tmp/php-fcgi.sock; //指定PHP-fpm的监听端口或者监听sock
                监听127.0.0.1:9000
                fastcgi_pass 127.0.0.1:9000;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME /usr/local/nginx/html$fastcgi_script_name;
        } // 配置解析PHP的部分
    }

nginx配置详解：
http://www.ha97.com/5194.html
https://my.oschina.net/duxuefeng/blog/34880

nginx默认虚拟主机